Harry J. Anslinger (1959). "The traffic in narcotic drugs: The implementation of treaty obligations in regulating the traffic in narcotic drugs" (PDF). The American University Law Review. 8: 112–116. Archived from the original (PDF) on 1 April 2012 . Retrieved 31 October 2011. Under the Federal Controlled Substances Act opium poppy and poppy straw are listed as Schedule II drugs under ACSN 9630. Most (all?) states also use this classification under the uniform penal code. Possession of a Schedule II drug is a federal and state felony.

Some forms of caterpillars will chew on the leaves. While this won’t harm the plant, it may increase local caterpillar populations and put other plants in danger. Bacillus thurigiensis spray will eliminate this concern.It’s a good idea to prevent oriental poppies from going to seed. This boosts the chance of more flowers as the plant's energy isn't diverted into the seed heads.

Purple poppy mallow is another variety that grows best in infertile soil, but this one grows best in zones 4 through 8.Sb. Zákon o návykových látkách a o změně některých dalších zákonů, Czech Republic, effective since 1 January 1999; § 29 effective since 1 January 1999; § 29

Poppy is generally believed to stem from West Asia, although more recently a West Mediterranean origin was suggested. The poppy was cultivated in Europe since the Neolithic era some six thousand years ago. It is probably one of the earliest plants cultivated in that region. a b Gaur, B. L.; Gupta, P. C.; Sharma, D. D. (January 1986). "Weed management in opium poppy Papaver somniferumL". Tropical Pest Management. 32 (4): 267–268. doi: 10.1080/09670878609371076. ISSN 0143-6147. Papaver somniferum is an easy annual to grow. It will reseed itself in the garden if some of the pods are left on the plant to dry. Once the heads turn brown, in late autumn shake the seeds into the garden to sow the seed for strong, vigorous plants that will flower that bit earlier next year. The seeds can also be collected and dried and sown in early spring. In the United States, opium poppies and poppy straw are prohibited. [43] As the opium poppy is legal for culinary or esthetic reasons, poppies were once grown as a cash crop by farmers in California. The law of poppy cultivation in the United States is somewhat ambiguous. [44] The reason for the ambiguity is that the Opium Poppy Control Act of 1942 (now repealed) [45] [46] stated that any opium poppies should be declared illegal, even if the farmers were issued a state permit. § 3 of the Opium Poppy Control Act stated: a b c Dittbrenner, A. (2009). "Variability of alkaloid content in Papaver somniferum L ". Journal of Applied Botany and Food Quality. 107: 103–107.Salavert, Aurélie; Zazzo, Antoine; Martin, Lucie; Antolín, Ferran; Gauthier, Caroline; Thil, François; Tombret, Olivier; Bouby, Laurent; Manen, Claire; Mineo, Mario; Mueller-Bieniek, Aldona (20 November 2020). "Direct dating reveals the early history of opium poppy in western Europe". Scientific Reports. 10 (1): 20263. Bibcode: 2020NatSR..1020263S. doi: 10.1038/s41598-020-76924-3. ISSN 2045-2322. PMC 7679390. PMID 33219318. a b c Gaevskii, A.V. (1999). "On the intraspecies classification of opium poppy (Papaver somniferum L.)". Khimiko-Farmatsevticheskii Zhurnal. 33 (3): 32–36. doi: 10.1007/BF02508453. S2CID 9716321. Suitable for summer bedding, this hardy annual known as ‘Giant Poppy’ belongs to the Papavar genus.